Regensburg Cathedral was built from 1275 on a former Romanesque cathedral building which burned down twice in 1272 and 1273. The new cathedral is a masterpiece of the Gothic style, comparable to Cologne Cathedral. Moreover, like the latter, the cathedral was redecorated in the neo-Gothic style in the 19th century.
Weltenburg Abbey is a Benedictine monastery founded in the 7th century and it is considered the oldest monastery in Bavaria.
The Synagogue in Straubing is an Ashkenazi synagogue built in 1905-07, restored in 1988. This stone building still serves as a synagogue.